Loom



July 20, 1937. I w, ROBERTS 2,087,332

Loom

Original Filed Jan. 9, 1936 2 Sheets-Sheet 1 July 20,1937. w, A, ROBERTS2,087,332

LOOM

Original Filed Jan. 9, 1936 2 Sheets-Sheet 2 Ha; 7. r P

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Patented July 2%, 1937 UNiiED srarss PATENT @FEEQE onethird to WilliamH. Browne and one-third to Lela Roberts, both of Greenville, S. 0.

Application January 9, 1936, Serial No. 58,392 Renewed April 22, 1937 Animportant object of the invention is to provlde means whereby a loomwhich is adapted for invention relates to improvements in making checkedgoods such as ginghams, and.

having two shiftable shuttle boxes at one side, and a singlenon-shiftable shuttle box on the other side, may be converted into apick. and pick loom having two shiftable shuttle boxes at its oppositesides, and which conversion may be effected by simple'means, which arerelatively inexpensive, and may be installed upon the old loom, withoutmaterially altering the construction of the same.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings, forming a part of this application and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a side elevation of a converted loom embodying my invention,

Figure 2 is a horizontal section taken on line 22 of Figure 1,

Figure 3 is a transverse vertical section taken on line 33 of Figure 1,

Figure 4 is a detailed vertical section taken on line ll of Figure 3,

Figure 5 is a diagrammatic view showing the multiple shuttle boxes inone relative position,

Figure 6 is a similar view showing the multiple shuttle boxes in theother or shifted relative position,

Figure '7 is a front elevation of the converted loom embodying myinvention.

Figure 8 is a perspective View of the driving means for shifting themultiple shuttle boxes,

Figure 9 is an enlarged detailed section taken on line 99 of Figure 8,and,

Figure 10 is an enlarged detailed section taken on line li2i9 of Figure8.

The loom which I have illustrated and have converted from a loom havingtwo shiftable shuttle boxes at one side and a coacting singlenonshiftable shuttle box at the other side, is: shown substantially inLetters Patent 948,568, issued February 8, 1910, to which reference ismade for much of the details of construction of the old loom. Only somuch of the old construction will be described as is deemed necessaryfor a proper understanding of the present invention.

The old loom comprisesa frame including sides l5 connected by the usualbreast beam, not shown. At the bottom of the sides i5 is the rock shaftl6 having the lay swords ll rigidly mounted thereon, and the lay i8 isrigidly attached to the upper ends of the lay swords. Rigidly mountedupon the ends of the rock shaft I6 are stands l9 including sleeves 28,which are clamped to the rock shaft it by set screws 2!. The stands l9carry yokes 22, in which are pivoted the picker sticks 23. The operatingmeans for the picker sticks have not been shown. In the loom shown inPatent 948,568, when one shuttle box is in the operative position or atthe same elevation with the coacting single shuttle box, the pickersticks move in the same directions for a selected number of strokes,thus introducing a selected number of woof strands or filling, and afterthis, the shiftable shuttle boxes are moved so that the other shuttlebox is brought at the same elevation with the single coacting shuttlebox, and the picker sticks then operate in the same manner. In thepresent invention, the picker sticks 23 are operated in the usual mannerpresent in a pick and pick loom, both picker sticks being moved inwardlysimultaneously. The lay i8 is oscillated to pack up the woof or fillingby the usual means, as shown in Patent 948,568.

Secured to the lay sword ll, adjacent to the left side 55 of the loom,is a guide 25, receiving and guiding the vertically shiftable multipleshuttle box unit 25. This shuttle box unit is shown as comprising twosuperposed shuttle boxes 28. The shuttle box unit is ordinarily anintegral structure. The guide 2% and the shuttle box unit, which isdescribed, are present upon the original loom which I have converted.The original loom carried at the right side and adjacent to the'rightend of the lay 58, a single non-shiftable shuttle box which was mountedupon the top of the lay l8 which originally projected outwardly beyondthe adjacent lay sword H. In making the present conversion, I saw offthe lay l8 at about the point 2? and remove the right end of the lay l8and the single shuttle box, and I substitute therefor a guide 28,corresponding'to the guide 2% and mount this guide upon the adjacentlaysword El, and I arrange within the guide 28 a vertically shiftableshuttle box unit 29, corresponding to the shuttle box unit 25, andcomprising two superposed shuttle boxes 30. The shuttle box unit 28 ispreferably formed integral. The loom is therefore equipped with twoshiftable multiple shuttle box units, as is present in the ordinary pickand pick loom.

The shuttle box unit 25 on the old loom is sup ported and shifted by, asubstantially vertical rod 3!, rigidly secured thereto, and this rodextends downwardly and is slidably mounted within the aperture 32 of abracket 33 which is rigidly attached to the adjacent stand l9 by a bolt34. At its lower end, the rod 3| has a sleeve 35 adjustably mountedthereon and is adapted to be clamped in adjustment at the selectedposition by lock nuts 36. The sleeve 35 has a trunnion 31, preferablyintegral therewith, and this trunnion pivotally receives thereon an eye38 of a releasable link connection or alligator which is designated, asa whole, by the numeral 39. This alligator includes opposed jaws 40 andAll, normally holding a pivot element 42 in recesses 83, but releasingthis pivot elementwhen the 100m is subjected to excessive strains. Thepivot element or bolt 42 operates within an elongated slot 45 formed inone end of a box lever 45, in turn supported upon a pivot 46, carried bya stationary bracket 41. It is thus seen that when the box lever 55 isvertically swung upon its pivot 46, the substantially vertical rod 3|will be raised and lowered, through the medium of the connecting link 39and associated elements. This is the operation present upon the oldloom. Since the old loom had shiftable shuttle boxes upon the left sideonly, there was no means on the right side to shift the added shiftableshuttle boxes, and to effect this movement, I provide a substantiallyvertical rod 48, rigidly attached to the bottom of the shiftable shuttlebox unit 29, and operating at its lower end through an aperture 59formed in a bracket rigidly secured to the adjacent stand l9 by aclamping bolt 5! or the like. The rod 48 is moved upwardly by acompressible coil spring 52, surrounding the same, and engaging at itslower end, the bracket 58, and at its upper end a sleeve 53, clamped tothe rod 48. A non-extensible flexible element 54, such as a chain, issuitably attached to the sleeve 53 and extends longitudinally of the rod58 and is passed about a grooved pulley 55, rotatable upon a trunnion58, rigidly secured to the adjacent stand E9. The chain 54 then extendshorizontally to the left beneath the rock shaft E6 and passes about agrooved pulley 51, rotatable upon a trunnion 58, rigidly attached to theadjacent stand l9. The flexible element or chain then extends upwardlyand longitudinally of the rod SI and is suitably connected with a sleeve59, clamped to this rod. It is thus seen that the rods 3| and 48 areconnected so that they move longitudinally in unison and in oppositedirections.

A horizontal bracket 60 is rigidly secured to the left side E5 of theloom frame and has a bearing 6!, rotatably holding a short shaft 62. Theshort shaft 62 has a disk 83 rigidly secured thereto, and this disk isprovided upon its inner side with a pin 84, rigidly secured thereto, andthis pin has pivotal connection with a link 65.

The link 65, Figure 9, is provided at its upper end with a cylindricalopening 66, receiving a cylindrical pin 67, having a square portion 68and a flange 89 rigidly secured thereto. The square portion 68 isslidable within an elongated slot in formed in the inner end of the boxlever 45, and may be adjusted within this slot, and clamped in theselected adjusted position by a nut H. The disk 53 has spaced pins 12,rigidly secured thereto and arranged upon its outer side, and these pinsare arranged in a square group. A holding device is employed to coactwith these pins, comprising a head 13 carried by a vertically swingingarm 74, pivoted at T5, to a stationary bracket E6, in turn rigidlymounted upon the bracket 68. The arm 14 is drawn downwardly by aretractile coil spring ll. The function of the holding device 78 is tohold the disk 13 and its shaft 62 against displacement or accidentalturning movement, when turned to the selected position. The shaft 82 andassociated elements is old in the original loom and the shaft 62corresponds to the shaft 58' in Patent 948,568. In Patent 948,568, amutilated pinion I 3 is rigidly mounted upon the shaft l3 and has twospaced sets of gear teeth, with actuating teeth shiftable to positionsbetween the two sets of gear teeth. These actuating teeth and pinion E8,in Patent 948,568, coact with a master gear I 5. The actuating teeth inthe patent are shifted by a lever l8 operated by a pattern lever 2! ofthe pattern mechanism. In converting the loom, the pattern mechanism isomitted and the means including the lever i5 is omitted and theactuating teeth are not shiftable. Instead of employing shiftableactuating teeth, I employ actuating teeth 78 which are fixed and notshiftable, and are carried by a hub l9, rigidly clamped to the shaft 62by a bolt 89. The actuating teeth 18 are disclosed between sets of teeth8! of a mutilated gear 82, which is rigidly mounted upon the short shaft62 by -a pin or rivet 83. The mutilated gear 82 corresponds to themutilated gear I 8 and may be the original mutilated gear on the oldloom. The mutilated gear 82 is therefore provided with the actuatingteeth l8 which are rigidly connected with the mutilated gear to turntherewith and are not longitudinally shiftable, as is the case in theloom shown in Patent 948,568. Arranged near the short shaft 52 is abottom shaft 84, corresponding to the shaft 85 in Patent 948,568. Thisshaft is suitably journalled in bearings carried by the sides E5. Themaster gear l4 in Patent 948,568 with one set of gears, is removed and amutilated master gear 85 is rigidly mounted upon the shaft 85. Thismutilated master gear 85 has two sets of gear teeth 88, spaced, anddiametrically oppositely arranged. The shaft 84 is turned in thedirection of its arrow, Figure 1, and as each set of gears 88 approachesthe adjacent actuating tooth 18, it will engage therewith and turn themutilated gear 82 so that the corresponding set of teeth 89 will meshwith the adjacent set of teeth 86. During this engagement, the mutilatedgear 82 and its shaft 62 are turned for one-half of a revolution, sothat the disk 63 will swing the box lever to the extreme upper or lowerposition, and when the master gear disengages the mutilated gear 82, thebox lever 45 is at rest in the extreme upper or lower position and issecurely held in such position against accidental movement ordisplacement by I the holding device 73.

The operation of the loom will be more readily understood from aconsideration of Figures 5, 6 and 7. As explained, the box lever 45 isswung in opposite directions to the extreme upper and lower positions.In Figures 5 and 7, the end of the box lever 55, carrying the pivot 42,is in the extreme lower position, whereby the upper shuttle box 26 ofthe mutiple shuttle unit 25 is in the lowered position, and at the sameelevation with the lower shuttle box 38 of the multiple shuttle box unit29, the unit 29 being now in the extreme upper position. The uppershuttle box 28 and the lower shuttle box 89 may be regarded as holdingshuttles carrying bobbins of red yarn, while the lower shuttle box 28and the upper shuttle box 38 may be regarded as carrying shuttles havingbobbins of blue yarn, these colors being indicated by the letters R andB, Figures 5 and 6. When the said box lever 45 draws the rod 3!downwardly so that the parts are arranged as in Figure 7, the spring 52moves the rod d8 upwardly a corresponding distance as the rod (it paysout the flexible element or chain 5 1. When the rod 3! is elevated, toshift the multiple shuttle box unit upwardly, the rod 3| pulls the chain54 with it, and this chain acting about its pulleys, moves the rod 48downwardly, and the shuttle box unit 29 is lowered for a correspondingdistance. It is thus seen that means are arranged upon one side of theloom frame only, for actuating the adjacent shuttle box unit, and meansare provided for connecting the movable rod of this shuttle box unitwith the movable rod of the companion shuttle box unit, so that theseshuttle box units move in unison and in opposite directions, for thesame distances. When the shuttle box unit 25 is raised, Figure 6, andthe shuttle box unit 29 is lowered, the lower shuttle box 26 is at thesame elevation with the upper shuttle box 39, and the shuttlescontaining the bobbins with blue yarn pass from one shuttle box to theother. The picker sticks 23 operate in accordance with picker sticks inthe usual pick and pick loom, that is, the two picker sticks moveinwardly simultaneously and outwardly simultaneously, the coaction ofthe-picker sticks being properly timed, as is well known.

When the single non-shiftab-le box is removed from the loom, the meansto replenish the bobbins is also omitted.

The loom which I have applied my invention to is similar to the loomshown in Patent 948,568, as stated, and is also quite similar to theloom shown in Patent 1,003,528.

While I have illustrated my invention as converting a loom having ashiftable shuttle box unit of two shuttle boxes coacting with a singleshuttle box, into a pick and pick loom hav-- ing two shuttle box units,each containing two shuttle boxes, yet the invention is not restrictedto the number of shuttle boxes in the units, as the invention may beused, with slight modifications, upon shuttle box units, each of whichcontains other mutiples of shuttle boxes, such as four, six, etc.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of my invention or thescope of the subjoin-ed clairnsi Having thus described my invention,what I claim is:

1. A loom comprising a frame having sides, a lay, guide devices arrangednear the sides and connected with the lay, shiftable shuttle box unitsengaging the guide devices, each shuttle box unit including a pair ofshuttle boxes, rods connected with the shuttle box units to move them, abox lever arranged adjacent to one side of the frame and connected withthe adjacent rod, a short shaft arranged adjacent to the same side ofthe frame, driving connecting means between the short shaft and the boxlever, a mutilated gear rigidly mounted upon the short shaft and havinga pair of sets of diametrically oppositely arranged gear teeth,actuating teeth arranged between the sets of gear teeth, means rigidlyattaching the actuating teeth to the short shaft, a master gear arrangednear the mutilated gear and having a pair of spaced sets of gear teethwhich are oppositely arranged, a flexible element connected with the rodadjacent to the other side of the frame to move the rod in one directionand extending across the frame to the companion rod and connectedtherewith, guide means engaging the flexible element, and a spring tomove the rod in one direction when the flexible element is payed out.

2. In a loom, a frame having sides, a rock shaft carried near the bottomof the frame and extending to: the exterior of the sides, standsarranged exteriorly of said sides and mounted upon the rock shaft, alay, lay swords supporting the lay and mounted upon the rock shaft,guide devices connected with the ends of the lay, vertically movableshuttle box units engaging the guide devices, each unit including aplurality of shuttle boxes, substantially vertical rods arrangedexteriorly of the sides of the frame and connected with the shuttle boxunits, a box lever arranged exteriorly of one side of the frame and nearthe substantially vertical rod and connected with such rod to positivelymove it in opposite directions, means to swing the box lever in oppositedirections, a spring to move the other substantially vertical rodupwardly, pivoted guide elements, and a flexible element extendingacross the frame adjacent to its bottom and passed about the pivotedguide elements, the ends of the flexible element being arrangedexteriorly of the sides of the frame, one end portion, of the flexibleelement extending upwardly from the adjacent pivoted guide element forconnection with the rod which is moved upwardly by the spring and theopposite end portion of the flexible element extending upwardly forconnection with the rod which is moved by the box lever, the arrangementbeing such that the rods are. simultaneously moved in oppositedirections and the flexible element moves the spring shifted roddownwardly in opposition to the spring.

3, In a loom, a frame, a rock shaft carried by the frame near itsbottom, stands mounted upon the ends of the rock shaft, a lay, layswords supporting the lay and mounted upon the rock shaft, guide devicesconnected with the ends of the lay, vertically movable shuttle box unitsengaging the guide devices, each unit including a plurality of shuttleboxes, substantially vertical rods connected with the shuttle box units,a box lever arranged I near one substantially vertical rod and connectedwith such rod to positively move it in opposite directions, a spring tomove the other substantially vertical rod upwardly, pivoted guideelements mounted upon the stands and arranged beneath and near the lowerends of the substantially vertical rods, and a flexible elementextending across the frame adjacent to its bottom and passed about thepivoted guide elements, the end portions of the flexible elementextending upwardly beyond the guide elements and connected with thesubstantially vertical rods, the arrangement being such that thesubstantially vertical rods are simultaneously moved in oppositedirections and the flexible element moves the spring shiftedsubstantially vertical rods downwardly opposition to the spring.

4. In a loom, a frame, a lay mounted upon the frame, guide devicesconnected with the ends of the lay, vertically movable shuttle box unitsengaging the guide devices, each unit including a plurality of shuttleboxes, substantially vertical rods attached to the shuttle box units, a.box lever arranged near one substantially vertical rod and connectedwith such rod to positively move it in opposite directions, means toswing the box lever in opposite directions, a spring to move the othersubstantially vertical rod upwardly, guide elements carried by the framenear its bottom and near the lower ends of the substantially verticalrods, and a flexible element extending across the frame adjacent to itsbottom and passed about the guide elements, the end portions of theflexible element extending upwardly beyond the guide elements, such endportions being attached to the substantially vertical rods, thearrangement being such that the rods are moved simultaneously inopposite directions and the flexible element moves the spring shiftedsubstantially vertical rod downwardly in opposition to its spring.

WILLIAM A. ROBERTS.

